LOL I forgot how Lisp works

src/lexer.js

           value: value,
         })
         pos += value.length + 1 // the +1 is to account for the apostrophe
-      } else if (source[pos].match(/\,/)) {
-        tokenStream.tokens.push({
-          type: tokenTypes.COMMA,
-          line: line,
-          value: value,
-        })
-        pos += 1
       } else if (source[pos].match(/\d/)) {
         let number = ''
         while (source[pos] && source[pos].match(/\d/)) {

src/parser.js

           name: this.tokenStream.eat(tokenTypes.IDENTIFIER).value,
         }),
       )
-
-      if (this.tokenStream.peek().type === tokenTypes.COMMA) {
-        this.tokenStream.eat(tokenTypes.COMMA)
-      }
     }
 
     this.tokenStream.eat(tokenTypes.CPAREN)